Split String->key-value with types

libimagutil/src/key_value_split.rs

@@ -1,19 +1,54 @@
 use regex::Regex;
 
-pub fn split_into_key_value(s: String) -> Option<(String, String)> {
+use std::convert::Into;
+use std::convert::From;
+
+use std::option::Option;
+
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub struct KeyValue<K, V> {
+    k: K,
+    v: V,
+}
+
+impl<K, V> KeyValue<K, V> {
+
+    pub fn new(k: K, v: V) -> KeyValue<K, V> {
+        KeyValue { k: k, v: v }
+    }
+
+}
+
+impl<K, V> Into<(K, V)> for KeyValue<K, V> {
+
+    fn into(self) -> (K, V) {
+        (self.k, self.v)
+    }
+
+}
+
+pub trait IntoKeyValue<K, V> {
+    fn into_kv(self) -> Option<KeyValue<K, V>>;
+}
+
+impl IntoKeyValue<String, String> for String {
+
+    fn into_kv(self) -> Option<KeyValue<String, String>> {
         let r = "^(?P<KEY>(.*))=((\"(?P<DOUBLE_QVAL>(.*))\")|(\'(?P<SINGLE_QVAL>(.*)))\'|(?P<VAL>[^\'\"](.*)[^\'\"]))$";
         let regex = Regex::new(r).unwrap();
-    regex.captures(&s[..]).and_then(|cap| {
+        regex.captures(&self[..]).and_then(|cap| {
             cap.name("KEY")
                 .map(|name| {
                     cap.name("SINGLE_QVAL")
                         .or(cap.name("DOUBLE_QVAL"))
                         .or(cap.name("VAL"))
-                    .map(|value| (String::from(name), String::from(value)))
+                        .map(|value| KeyValue::new(String::from(name), String::from(value)))
                 }).unwrap_or(None)
         })
     }
 
+}
+
 #[cfg(test)]
 mod test {
     use super::split_into_key_value;